历史性课题 meaning in English

historic objective
historic subject

Focusing on the two historic tasks of being capable of winning and never degenerate
打得赢不变质两个历史性课题
This is a question of historical significance that can not be overlooked because it is closely related to the very foundation of consolidating the party ' s ruling position and the realization of the great rejuvenation of the chinese nation
在党的十六大上，加强党的执政能力建设被作为一个重大历史性课题提了出来。这是一个关系到巩固党的执政地位、实现中华民族新的伟大复兴的无法回避和必须面对的重大课题。